IsGraphQlErrorResult

@vendure/core Source

Returns true if the ErrorResultUnion is actually an ErrorResult type. This is useful when dealing with certain internal service method that return an ErrorResultUnion.

Example

import { isGraphQlErrorResult } from '@vendure/core';// ...const transitionResult = await this.orderService.transitionToState(ctx, order.id, newState);if (isGraphQlErrorResult(transitionResult)) {    // The transition failed with an ErrorResult    throw transitionResult;} else {    // TypeScript will correctly infer the type of `transitionResult` to be `Order`    return transitionResult;}

Signature

function isGraphQlErrorResult<T extends GraphQLErrorResult | U, U = any>(input: T): input is JustErrorResults<T>

Parameters

input

parameterT